diff options
Diffstat (limited to 'c/src/libchip/shmdr/cnvpkt.c')
-rw-r--r-- | c/src/libchip/shmdr/cnvpkt.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/c/src/libchip/shmdr/cnvpkt.c b/c/src/libchip/shmdr/cnvpkt.c new file mode 100644 index 0000000000..2c3a144167 --- /dev/null +++ b/c/src/libchip/shmdr/cnvpkt.c @@ -0,0 +1,42 @@ +/* void Shm_Convert_packet( &packet ) + * + * This routine is the shared memory locked queue MPCI driver routine + * used to convert the RTEMS's information in a packet from non-native + * format to processor native format. + * + * Input parameters: + * packet - pointer to a packet + * + * Output parameters: + * *packet - packet in native format + * + * NOTE: Message buffers are not manipulated. + * Endian conversion is currently the only conversion. + * + * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. + * On-Line Applications Research Corporation (OAR). + * All rights assigned to U.S. Government, 1994. + * + * This material may be reproduced by or for the U.S. Government pursuant + * to the copyright license under the clause at DFARS 252.227-7013. This + * notice must appear in all copies of this file and its derivatives. + * + * $Id$ + */ + +#include <rtems.h> +#include "shm.h" + +void Shm_Convert_packet( + rtems_packet_prefix *packet +) +{ + rtems_unsigned32 *pkt, i; + + pkt = (rtems_unsigned32 *) packet; + for ( i=RTEMS_MINIMUN_HETERO_CONVERSION ; i ; i--, pkt++ ) + *pkt = CPU_swap_u32( *pkt ); + + for ( i=packet->to_convert ; i ; i--, pkt++ ) + *pkt = CPU_swap_u32( *pkt ); +} |